CVE-2026-44291

HIGH EPSS 39.0%
Published May 13, 20261mo ago · Modified Jun 17, 20261w ago
8.1 CVSS 3.1
High
Find Similar
Published May 13, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs used plain objects with inherited prototypes for internal type lookup tables used by generated encode and decode functions. If Object.prototype had already been polluted, those lookup tables could resolve attacker-controlled inherited properties as valid protobuf type information. This could cause attacker-controlled strings to be emitted into generated JavaScript code. This vulnerability is fixed in 7.5.6 and 8.0.2.

CVSS Details

Base Score
8.1
Exploitability
2.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
39.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 2

VendorProductVersionRange
protobufjs_projectprotobufjs* <7.5.6
protobufjs_projectprotobufjs*≥8.0.0  –  <8.0.2

References 1

  • github.com https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-75px-5xx7-5xc7
    MitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.